* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
.container {
  display: flex;
  justify-content: space-around;
  align-items: center;
  flex-wrap: wrap;
  min-width: 450px;
  width: 450px;
  height: 450px;
}
.block {
  width: 140px;
  height: 140px;
  margin: 5px;
  border-radius: 14px;
  background-color: #78bec5;
  cursor: pointer;
  transition: 0.7s;
}
